MF
Mary Frey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Racine-County, Wisconsin
Our Model Tree links this Mary Frey across the 1930 and 1940 US Censuses in Racine-County, Wisconsin (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 20
b. ~1920
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Racine-County, Wisconsin |
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Burlington |
| 1935 Residence (County) | Racine |
| Additional Details | |
| Occupation | Nurse |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 65 |
| Income (1939) | 888 |
| Highest Grade | Hs 4 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Nurse |
| Township / Ward | Burlington |
| Est. Birth Year | ~1920 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Frey | Daughter | — | 13 | ~1927 |
| Phyllis Frey | Daughter | — | 8 | ~1932 |
| Doris Frey | Daughter | — | 22 | ~1918 |
| George Frey | Head | — | 49 | ~1891 |
| George Frey | Son | — | 14 | ~1926 |
| Paul Frey | Son | — | 5 | ~1935 |
| Joan Frey | Daughter | — | 10 | ~1930 |
| Kathleen Frey | Daughter | — | 15 | ~1925 |
| Catherine Frey | Spouse | — | 43 | ~1897 |
| Mary Frey | Daughter | — | 20 | ~1920 |
Census Appearances
1930
Racine, Wisconsin
Daughter, age 9
Racine, Wisconsin · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Racine-County, Wisconsin
Daughter, age 20
Racine-County, Wisconsin · implied b. ~1920 — 10 household members
| Surname | Frey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Burlington |
| 1935 Residence (County) | Racine |
| Occupation | Nurse |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 65 |
| Income (1939) | 888 |
| Highest Grade | Hs 4 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Frey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Frey
Daughter · 1940 · age 20 · b. ~1920 · Wisconsin
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Sibling
Phyllis Frey
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Frey
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Frey
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Frey
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Frey
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Frey
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Frey
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Racine-County, Wisconsin
Open full size
1940 US Federal Census — Racine-County, Wisconsin
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04515-00129)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John L. Frey | 72 | Head | Gardner | Germany |
| 2 | Mary Frey | 73 | Wife | Housewife | Germany |
| 3 | Frank Mickett | 50 | Head | Sawyer | Wisconsin |
| 4 | Mary Mickett | 36 | Wife | Housewife | Wisconsin |
| 5 | Jean Mickett | 6 | Daughter | — | Wisconsin |
| 6 | George Bieneman | 41 | Head | Farmer | Wisconsin |
| 7 | Helen Bieneman | 36 | Wife | House Wife | Wisconsin |
| 8 | Evelyn Bieneman | 4 | Daughter | — | Wisconsin |
| 9 | George Jr. Bieneman | 2 | Son | — | Wisconsin |
| 10 | Joan Bieneman | 1 | Daughter | — | Wisconsin |
| 11 | Herman Koch | 65 | Head | Farmer | Germany |
| 12 | Emma Koch | 60 | Wife | — | Germany |
| 13 | Anna Wilson | 49 | Head | Housekeeper | Wisconsin |
| 14 | John R. Wilson | 19 | Son | — | Wisconsin |
| 15 | Jean Wilson | 11 | Daughter | — | Wisconsin |
| 16 | Genevieve Wilson | 9 | Daughter | — | Wisconsin |
| 17 | George Frey | 49 | Head | Farmer | Wisconsin |
| 18 | Catherine Frey | 43 | Wife | House Wife | Wisconsin |
| 19 | Doris Frey | 22 | Daughter | Nurse | Wisconsin |
| 20 | Mary Frey THIS PERSON | 20 | Daughter | Nurse | Wisconsin |
| 21 | Kathleen Frey | 15 | Daughter | — | Wisconsin |
| 22 | George Jr. Frey | 14 | Son | — | Wisconsin |
| 23 | Helen Frey | 13 | Daughter | — | Wisconsin |
| 24 | Joan Frey | 10 | Daughter | — | Wisconsin |
| 25 | Phyllis Frey | 8 | Daughter | — | Wisconsin |
| 26 | Paul Frey | 5 | Son | — | Wisconsin |
| 27 | Leonard Storkum | 43 | Head | Farmer | Wisconsin |
| 28 | Anna Storkum | 40 | Wife | — | Wisconsin |
| 29 | Phillip Storkum | 12 | Son | — | Wisconsin |
| 30 | George Fleming | 44 | Head | Farmer | Wisconsin |
| 31 | Elsie Fleming | 42 | Wife | — | Wisconsin |
| 32 | Elmer Fleming | 17 | Son | — | Wisconsin |
| 33 | Eugene Fleming | 11 | Son | — | Wisconsin |
| 34 | Arnold Fleming | 8 | Son | — | Wisconsin |
| 35 | Arthur Radman | 28 | Head | Farmer | Wisconsin |
| 36 | Ellen Radman | 24 | Wife | Housewife | Wisconsin |
| 37 | Edward Radman | 7 | Son | — | Wisconsin |
| 38 | John Radman | 5 | Son | — | Wisconsin |
| 39 | Dorothy Radman | 2 | Daughter | — | Wisconsin |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)